发明名称 |
METHOD AND DEVICE FOR FORMING DENSE LAYERS IN A GYPSUM PASTE |
摘要 |
A process for manufacturing plasterboard and a plasterboard manufacturing unit are provided, the process including feeding hydratable calcium sulphate and water into a first mixer (2) and into a second mixer (3); feeding in a facing (5); preparing a first gypsum slurry in the first mixer (2); preparing a second gypsum slurry in the second mixer (3); applying the first slurry onto the facing and forming a crude surface layer; applying the second slurry onto the crude surface layer and forming a crude core layer with a density lower than that of the crude surface layer; forming a plasterboard; hydrating and drying the board. This process allows the formation of the different layers of gypsum to be controlled independently. |
申请公布号 |
PL199451(B1) |
申请公布日期 |
2008.09.30 |
申请号 |
PL20020367072 |
申请日期 |
2002.05.10 |
申请人 |
LAFARGE PLATRES |
发明人 |
CALLAIS BRUNO;JALLON PAUL;LAURENT JEAN-LOUIS;RIGAUDON MICHEL |
分类号 |
B28B1/30;B28B19/00;B28B1/16;B28B13/02;B28B17/02;B28C5/16 |
主分类号 |
B28B1/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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